While a full account of Daggoth's activities is not available, it is known that he provided considerable assistance and advice to the newest cerebrate of the swarm, created partway through the Great War, and the newly infested Sarah Kerrigan in her first days of life as part of the swarm.

Daggoth advised the cerebrate as the cerebrate protected Sarah Kerrigan's chrysalis - teaching the new cerebrate how to build a colony on Tarsonis[5] and later providing the young cerebrate with a few Hunter Killers to aid in transporting the chrysalis away from the former Confederate homeworld to Char.[2] After General Edmund Duke's attack on Char to reclaim Kerrigan was repelled, Daggoth ordered the new cerebrate to hold its position[6] while it gave chase.[7]

When Queen of Blades awoke from the chrysalis, she immediately sought to unravel the ghost conditioning that kept her psionic powers in check, opting to infiltrate the science vesselAmerigo to acquire details of her mental conditioning. Daggoth aided this mission by providing Hunter Killers.[3]

After Zasz was slain and the Overmind was paralyzed by the Dark Templar, Zeratul, Daggoth filled in for the Overmind's absence and issued the necessary commands to maintain the Zerg Swarm including ordering the destruction of Zasz's Garm Brood and sending his own forces against the offending protoss forces,[4] though Kerrigan would perform the latter task. [8] Upon the Overmind's reawakening, it informed the cerebrates of Zeratul's involvement, prompting Daggoth to make a plot to destroy the Dark Templar. While sending Kerrigan out to act as a lure, the junior cerebrate sent its forces to surround the Dark Templar and destroy them. Daggoth provided oversight for the mission by monitoring the junior cerebrate's troop placements - specifically, the overlords which could detect the Dark Templar - and ensuring that they never moved out of position sufficiently to allow the Dark Templar to escape.[9] Though the mission was a success, the protoss forces on Char had not been completely destroyed and Zeratul remained alive.

Daggoth went with the majority of the Zerg Swarm as it began its invasion of the protoss homeworld of Aiur. He monitored the battle to retrieve the powerful khaydarin crystals and celebrated once they had been claimed, stating, "now, all shall tremble before the might of the Swarm!".[10]

After the Overmind's death, Daggoth took command of the surviving cerebrates.

The cerebrates were not designed to exist without their creator, and so Daggoth felt compelled to rebuild the Overmind.[11] Daggoth ordered several other cerebrates to merge into a new Overmind. It was immature and unable to properly command the Swarm, but Daggoth, with the help of his fellow cerebrates, retained control over several broods,[12] forming a faction that Kerrigan referred to as the Renegade Swarm. The new Overmind nestled near the powerful Khalis crystal.[13] During the Brood War, Daggoth took control of approximately half[14] or more of the Zerg Swarm.[12]

Daggoth

Structure

Race

Properties

Production

Protection

Hit points

1500

Armor

1

While Daggoth has identical game stats and abilities as other cerebrates, his unit portrait is different. Throughout StarCraft: Brood War, his portrait is used, in place of the Overmind's, on virtually all zerg structures.

Daggoth is dead, along with the rest of the cerebrates. Kerrigan is the sole power behind the Swarm now. It’s possible that Daggoth could not sustain himself without the Overmind and other cerebrates to power him. We’ve suggested before that the Overmind and its cerebrates were symbiotically linked. The cerebrates were not designed to exist without their creator. That’s a partial reason behind the cerebrates’ merging into a new, singular Overmind during the early events of Brood War.